EP1607645B1 - Federbeingleitlager - Google Patents

Federbeingleitlager Download PDF

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Publication number
EP1607645B1
EP1607645B1 EP04714883A EP04714883A EP1607645B1 EP 1607645 B1 EP1607645 B1 EP 1607645B1 EP 04714883 A EP04714883 A EP 04714883A EP 04714883 A EP04714883 A EP 04714883A EP 1607645 B1 EP1607645 B1 EP 1607645B1
Authority
EP
European Patent Office
Prior art keywords
cylindrical
sliding bearing
annular
casing
strut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP04714883A
Other languages
English (en)
French (fr)
Other versions
EP1607645A4 (de
EP1607645A1 (de
Inventor
Kazuyuki c/o Oiles Corporation MIYATA
Ryohei c/o OILES CORPORATION KANEKO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oiles Corp
Oiles Industry Co Ltd
Original Assignee
Oiles Corp
Oiles Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oiles Corp, Oiles Industry Co Ltd filed Critical Oiles Corp
Publication of EP1607645A1 publication Critical patent/EP1607645A1/de
Publication of EP1607645A4 publication Critical patent/EP1607645A4/de
Application granted granted Critical
Publication of EP1607645B1 publication Critical patent/EP1607645B1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/067—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit
    • B60G15/068—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper characterised by the mounting on the vehicle body or chassis of the spring and damper unit specially adapted for MacPherson strut-type suspension
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/60—Polyamides [PA]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/66—Acetals, e.g. polyoxymethylene [POM]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/70—Polyesters, e.g. polyethylene-terephthlate [PET], polybutylene-terephthlate [PBT]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/76—Polyolefins, e.g. polyproylene [PP]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein

Definitions

  • the present invention relates to a strut sliding bearing, and more particularly to a strut sliding bearing which is suitably incorporated as a sliding bearing of a strut-type suspension (Macpherson type) in a four-wheeled motor vehicle.
  • a strut-type suspension Macpherson type
  • a strut-type suspension is mainly used in a front wheel of a four-wheeled motor vehicle, and is constructed such that a strut assembly incorporating a hydraulic shock absorber in an outer cylinder formed integrally with a main shaft is combined with a suspension coil spring.
  • a suspension coil spring is actively offset with respect to the axis of the strut, so as to allow the sliding of a piston rod of the shock absorber incorporated in the strut to be effected smoothly.
  • the suspension coil spring is disposed by aligning the axis of the suspension coil spring with the axis of the strut.
  • a thrust bearing is disposed between a mounting member for a motor vehicle body and an upper spring seat member of the suspension coil spring to allow the rotation to be effected smoothly when the strut assembly rotates together with the suspension coil spring by the steering operation.
  • a rolling bearing using balls or needles, or a synthetic resin-made sliding bearing is used.
  • the rolling bearing is extremely favorable since it is capable of lowering the friction torque and effecting the steering operation lightly.
  • a sliding bearing instead of the rolling bearing is used as the thrust bearing.
  • either thrust bearing is interposed between the mounting member for the motor vehicle body and the upper spring seat member of the suspension coil spring, as described above.
  • the upper spring seat member is generally made of sheet metal, the upper spring seat member is relatively heavy.
  • the upper spring seat member made of sheet metal needs to be provided with coating for the prevention of rust, even if the sliding bearing is used instead of the expensive rolling bearing to attain the light weight and a low price of the undercarriage of the motor vehicle, there is a limit to such attempts for the light weight and the low price owing to the weight, manufacturing cost, assembly cost, and the like of the upper spring seat member.
  • the present invention has been devised in view of the above-described aspects, and its object is to provide a strut sliding bearing which makes it possible to omit the upper spring seat member made of sheet metal, thereby making it possible to attain the light weight and a low price of the undercarriage of a motor vehicle.
  • FR 2,803,561 discloses a suspension system having an upper casing, a cover casing and an annular thrust sliding bearing piece.
  • JP 2001 099218 discloses a strut mount having a body case and a spring seat - case made of resin.
  • a strut sliding bearing comprising:
  • the upper casing, the lower casing, and the thrust sliding bearing piece are made of a synthetic resin, it is possible to sufficiently attain light weight and a low price.
  • the lower casing has at its lower surface the spring seat surface for the suspension coil spring, one end portion of the suspension coil spring can be received by the lower casing, making it possible to omit an upper spring seat member made of sheet metal.
  • the strut sliding bearing in accordance with the invention essentially suffices if it functions as a thrust bearing, but the strut sliding bearing may further comprise a tubular radial sliding bearing piece as in the strut sliding bearing in accordance with a second aspect of the invention.
  • the upper casing includes an upper annular portion with the annular lower surface formed thereon and a cylindrical portion extended integrally downward from a radially inner peripheral edge or outer peripheral edge of the upper annular portion and having a cylindrical side surface, the lower casing having a cylindrical side surface opposed to the cylindrical side surface, the radial sliding bearing piece being interposed between the cylindrical side surface of the cylindrical portion of the upper casing and the cylindrical side surface of the lower casing.
  • the cylindrical portion of the upper casing suffices if it extends integrally downward from the radially inner peripheral edge or outer peripheral edge of the upper annular portion. Alternatively, however, such a cylindrical portion may extend integrally downward from both of the radially inner peripheral edge and outer peripheral edge of the upper annular portion.
  • the lower casing includes an inner peripheral-side cylindrical projecting portion integrally projecting upward from the annular upper surface on a radially inner peripheral side and an outer peripheral-side cylindrical projecting portion integrally projecting upward from the annular upper surface on a radially outer peripheral side.
  • the thrust sliding bearing piece is disposed between the inner peripheral-side cylindrical projecting portion and the outer peripheral-side cylindrical projecting portion.
  • the upper casing includes an inner peripheral-side cylindrical suspended portion integrally suspended downward from the annular lower surface on the radially inner peripheral side and an outer peripheral-side cylindrical suspended portion integrally suspended downward from the annular lower surface on a radially outer peripheral side.
  • the thrust sliding bearing piece is disposed between the inner peripheral-side cylindrical suspended portion and the outer peripheral-side cylindrical suspended portion.
  • the thrust sliding bearing piece can be positioned by the inner peripheral-side cylindrical projecting portion and the outer peripheral-side cylindrical projecting portion or by the inner peripheral-side cylindrical suspended portion and the outer peripheral-side cylindrical suspended portion, the thrust force can be received reliably by the thrust sliding bearing piece.
  • the inner peripheral-side cylindrical suspended portion and the outer peripheral-side cylindrical suspended portion are provided in addition to the inner peripheral-side cylindrical projecting portion and the outer peripheral-side cylindrical projecting portion, a preferable labyrinth can be formed by them. Accordingly, it is possible to more effectively prevent the entry of dirt, rain water, and the like into a space between the lower casing and the upper casing where the thrust sliding bearing piece is fitted.
  • the lower casing includes an annular base portion; an upper cylindrical portion which is integrally formed on an upper surface of the annular base portion and on which the annular upper surface is formed; and a lower cylindrical portion formed integrally on a lower surface of the annular base portion.
  • the lower surface of the annular base portion on a radially outer side of the lower cylindrical portion serves as the spring seat surface.
  • the strut sliding bearing in accordance with the invention as a result of the fact that the one end portion of the suspension coil spring can be held by the lower cylindrical portion with respect to the radial direction, it is possible to prevent the dislocation of the one end portion of the suspension coil spring from the spring seat surface.
  • the upper casing includes an upper annular portion on which the annular lower surface is formed and a cylindrical portion extended integrally downward from a radially outer peripheral edge of the upper annular portion, the upper cylindrical portion being surrounded by the cylindrical portion of the upper casing.
  • the upper cylindrical portion is formed integrally on the radially substantially central portion of the upper surface of the annular base portion, and is surrounded by the cylindrical portion of the upper casing, a lower gap between the cylindrical portion of the upper casing and the upper cylindrical portion of the lower casing can be covered by the annular base portion.
  • the annular base portion it is possible to effectively prevent the entry of dirt, rain water, and the like into a gap between the cylindrical portion of the upper casing and the upper cylindrical portion of the lower casing through the lower gap.
  • the strut sliding bearing in accordance with the sixth aspect may also further comprise a tubular radial sliding bearing piece.
  • the upper cylindrical portion of the lower casing has a cylindrical side surface opposed to a cylindrical side surface of the cylindrical portion of the upper casing, and the radial sliding bearing piece is interposed between the cylindrical side surface of the cylindrical portion of the upper casing and the cylindrical side surface of the upper cylindrical portion of the lower casing.
  • the synthetic resin of which the thrust sliding bearing piece and the radial sliding bearing piece are made should preferably possesses particularly self-lubricity.
  • the radial sliding bearing piece is formed of a synthetic resin including at least one of polyacetal resin, polyamide resin, thermoplastic polyester resin, polyolefin resin, and fluororesin.
  • the upper casing is preferably adapted to be resiliently fitted and secured to the lower casing.
  • the synthetic resin of which the upper casing and the lower casing are made which excels in the sliding characteristics such as wear resistance, impact resistance, and creep resistance as well as in mechanical characteristics such as rigidity, and which particularly exhibits preferable friction characteristics when combined with the synthetic resin used for the thrust sliding bearing piece should preferably be used.
  • the upper casing is formed of a synthetic resin including at least one of polyacetal resin, polyamide resin, thermoplastic polyester resin, polyolefin resin, polycarbonate resin, and fluororesin.
  • the thrust sliding bearing piece is formed of a synthetic resin including at least one of polyacetal resin, polyamide resin, thermoplastic polyester resin, polyolefin resin, and fluororesin.
  • the lower casing a synthetic resin similar to the synthetic resin of which the upper casing is made could be used, but as in the sliding bearing in accordance with a 12th aspect of the invention, the lower casing is formed of a reinforced synthetic resin comprising a synthetic resin, including at least one of polyacetal resin, polyamide resin, and polypropylene resin, and reinforcing fibers contained in the synthetic resin.
  • the reinforcing fibers it is possible to cite glass fibers, ceramic fibers, and the like, but other reinforcing fibers may be used.
  • the strut sliding bearing in accordance with the invention is for use in a strut-type suspension in a four-wheeled motor vehicle.
  • the strut sliding bearing in accordance with the invention is preferably interposed between a mounting member for a vehicle body and a suspension coil spring.
  • a strut sliding bearing which makes it possible to omit the upper spring seat member made of sheet metal, thereby making it possible to attain the light weight and a low price of the undercarriage of the motor vehicle.
  • a thrust sliding bearing 1 for use in a strut-type suspension in a four-wheeled motor vehicle in accordance with this embodiment is comprised of an upper casing 3 which is made of a synthetic resin, for example, polyacetal resin, and has an annular lower surface 2; a lower casing 5 which is made of a reinforced synthetic resin including a synthetic resin, for example, polyacetal resin and reinforcing fibers such as glass fibers contained in this polyacetal resin, is superposed on the upper casing 3 so as to be rotatable about an axis O of the upper casing 3 in an R direction, and has an annular upper surface 4 opposed to the annular lower surface 2 of the upper casing 3; an annular thrust sliding bearing piece 6 which is made of a synthetic resin, for example, polyacetal resin, and is interposed between the annular lower surface 2 and the annular upper surface 4; and a tubular radial sliding bearing piece 7 made of a synthetic resin, for example, polyacetal resin.
  • an upper casing 3 which is made
  • the annular upper casing 3 having a through hole 11 is integrally formed by including an upper annular portion 12 on which the annular lower surface 2 is formed; a cylindrical portion 14 extended integrally downward from a radially outer peripheral edge of the upper annular portion 12 and having a cylindrical side surface 13 on a radially inner side; an inner cylindrical suspended portion 15 suspended integrally downward from a radial inner peripheral edge of the upper annular portion 12; and an engaging hook portion 16 formed on the cylindrical side surface 13 on the radially inner side of the cylindrical portion 14.
  • the annular lower casing 5 having a through hole 21 concentric with the through hole 11 is integrally formed by including an annular base portion 22; an upper cylindrical portion 24 which is integrally formed on a radially substantially central portion of an upper surface 23 of the annular base portion 22 and on which the annular upper surface 4 is formed, further, the upper cylindrical portion 24 having a cylindrical side surface 29 opposed to the cylindrical side surface 13 of the cylindrical portion 14 of the upper casing 3; a lower cylindrical portion 26 formed integrally on a radially substantially central portion of a lower surface 25 of the annular base portion 22; an inner peripheral-side cylindrical projecting portion 27 integrally projecting upward from the annular upper surface 4 on a radially inner peripheral side; an outer peripheral-side cylindrical projecting portion 28 integrally projecting upward from the annular upper surface 4 on a radially outer peripheral side; and an engaged hook portion 30 formed on the cylindrical side surface 29.
  • the cylindrical side surface 13 is disposed radially inwardly of the cylindrical portion 14, while the cylindrical side surface
  • the lower surface of the lower casing 5, i.e., the lower surface 25 of the annular base portion 22 on the radially outer side of the lower cylindrical portion 26, serves as a spring seat surface 36 for a suspension coil spring 61.
  • the upper cylindrical portion 24 is surrounded by the cylindrical portion 14 of the upper casing 3, and a plurality of thinning cavities 37 are provided in the annular base potion 22, the upper cylindrical portion 24, and the lower cylindrical portion 26 so as to attain lightweight and the like.
  • the thrust sliding bearing piece 6 is disposed between the inner cylindrical suspended portion 15 and the cylindrical portion 14 and between the inner peripheral-side cylindrical projecting portion 27 and the outer peripheral-side cylindrical projecting portion 28 in such a manner as to slidably contact the annular lower surface 2 at its annular upper surface 41 and the annular upper surface 4 at its annular lower surface 42, respectively.
  • the radial sliding bearing piece 7 is disposed between the cylindrical portion 14 of the upper casing 3 and the upper cylindrical portion 24 of the lower casing 5 in such a manner as to slidably contact the cylindrical side surface 13 at its cylindrical radially outer surface 45 and the cylindrical side surface 29 at its cylindrical radially inner surface 46, respectively.
  • the upper casing 3 is adapted to be resiliently fitted and secured to the lower casing 5 at the engaging hook portion 16 by being resiliently engaged in a snap-fit fashion with the engaged hook portion 30 of the lower casing 5.
  • a labyrinth 51 is arranged to be formed between the upper annular portion 12 and the cylindrical portion 14 on the one hand, and the upper cylindrical portion 24 and the outer peripheral-side cylindrical projecting portion 28, on the other hand, while a labyrinth 52 is arranged to be formed between the upper annular portion 12 and the inner cylindrical suspended portion 15 on the one hand, and the inner peripheral-side cylindrical projecting portion 27, on the other hand.
  • the above-described strut sliding bearing 1 is used by being interposed between one end portion 62 of the suspension coil spring 61 in a strut-type suspension assembly 60, as particularly shown in detail in Figs. 1 and 2 , and a mounting member 63 for mounting the strut-type suspension assembly 60 to a motor vehicle body of a four-wheeled motor vehicle.
  • the mounting member 63 on the motor vehicle body side where one end portion 65 of a piston rod 64 of a hydraulic damper in the strut-type suspension assembly 60 is supported includes a mounting plate 67 which is installed on the motor vehicle body of the four-wheeled motor vehicle by means of a screw 66; a receiving member 68 having substantially the same shape as that of the upper casing 3; a cylindrical member 69 where the one end portion 65 of the piston rod 64 is disposed; a seat plate 70 through which the one end portion 65 of the piston rod 64 is passed; and a resilient member 73 in which one end portion of the mounting plate 67 is embedded and to which the receiving member 68 and the cylindrical member 69 are vulcanized to integrate the mounting plate 67, the receiving member 68, and the cylindrical member 69.
  • the one end portion 62 of the suspension coil spring 61 is seated on the spring seat surface 36.
  • the relative rotation of the lower casing 5 about the axis O in the R direction by means of the suspension coil spring 61 is smoothly effected by the relative sliding in the same direction between the upper surface 41 of the thrust sliding bearing piece 6 and the annular lower surface 2 of the upper casing 3 or the relative sliding in the same direction between the lower surface 42 of the thrust sliding bearing piece 6 and the annular upper surface 4 of the lower casing 5, as well as the relative sliding in the same direction between the inner surface 46 of the radial sliding bearing piece 7 and the cylindrical side surface 29 of the lower casing 5 or the relative sliding in the same direction between the outer surface 45 of the radial sliding bearing piece 7 and the cylindrical side surface 13 of the upper casing 3 during the steering operation.
  • the lower casing 5 is also made of a synthetic resin, it is possible to attain light weight and a low price. Moreover, since the lower casing 5 has at its lower surface 25 the spring seat surface 36 for the suspension coil spring 61, the one end portion 62 of the suspension coil spring 61 can be received by the lower casing 5, making it possible to omit an upper spring seat member made of sheet metal. Thus, it is possible to eliminate a weight increase ascribable to the upper spring seat member made of sheet metal and a price increase ascribable to the fabrication, coating, and assembly of the upper spring seat member made of sheet metal. Coupled with the above-described advantages, it is possible to further attain the light weight and a low price of the undercarriage of the motor vehicle.
  • the strut sliding bearing 1 As a result of the fact that the radial force applied between the lower casing 5 and the upper casing 3 can be received by the radial sliding bearing piece 7, even if the radial force is applied, the relative rotation between the lower casing 5 and the upper casing 3 can be effected with low frictional resistance. Thus, the steering operation can be performed lightly. Furthermore, since the thrust sliding bearing piece 6 can be positioned by the inner peripheral-side cylindrical projecting portion 27 and the outer peripheral-side cylindrical projecting portion 28, the thrust force can be received reliably by the thrust sliding bearing piece 6.
  • the upper cylindrical portion 24 is formed integrally on the radially substantially central portion of the upper surface 23 of the annular base portion 22, and is surrounded by the cylindrical portion 14 of the upper casing 3, a lower gap 71 between the cylindrical portion 14 of the upper casing 3 and the upper cylindrical portion 24 can be covered by the annular base portion 22. As a result, it is possible to effectively prevent the entry of dirt, rain water, and the like into a gap 72 between the cylindrical portion 14 of the upper casing 3 and the upper cylindrical portion 24 through the lower gap 71.
  • the strut sliding bearing 1 may be constructed by arranging the upper casing 3 by including an inner peripheral-side cylindrical suspended portion which is similar to the inner peripheral-side cylindrical projecting portion 27 and is integrally suspended downward from the annular lower surface 2 on the radially inner peripheral side, as well as an outer peripheral-side cylindrical suspended portion which is similar to the outer peripheral-side cylindrical projecting portion 28 and is integrally suspended downward from the annular lower surface 2 on the radially outer peripheral side, and by disposing the thrust sliding bearing piece 6 between the inner peripheral-side cylindrical suspended portion and the outer peripheral-side cylindrical suspended portion.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Damping Devices (AREA)

Claims (13)

  1. Federbein-Gleitlager, umfassend:
    ein Gehäuseoberteil (3), das aus Kunstharz gefertigt ist und das eine ringförmige Unterseite (2) aufweist;
    ein Gehäuseunterteil (5), das aus Kunstharz gefertigt ist, das so an dem Gehäuseoberteil (3) gelagert ist, dass es um eine Achse des Gehäuseoberteils (3) drehbbeweglich ist, und das eine ringförmige Oberseite (4) aufweist, die der ringförmigen Unterseite (2) des Gehäuseoberteils (3) gegenüberliegt; und
    ein ringförmiges Axialgleitlagerteil (6), das aus Kunstharz gefertigt ist und das zwischen der ringförmigen Unterseite (2) und der ringförmigen Oberseite (4) angeordnet ist;
    wobei das Gehäuseunterteil (5) eine an seiner Unterseite (25) angeordnete Federauflagefläche (36) für eine Radaufhängungsschraubenfeder aufweist, dadurch gekennzeichnet, dass das Gehäuseunterteil (5) einen ringförmigen Bodenabschnitt (22), einen zylinderförmigen oberen Abschnitt (24), der auf einem radial im Wesentlichen mittleren Abschnitt einer Oberseite (23) des ringförmigen Bodenabschnitts (22) einstückig angeformt ist und an dem die ringförmige Oberseite (4) ausgebildet ist, und einen zylinderförmigen unteren Abschnitt (26) umfasst, der auf einem radial im Wesentlichen mittleren Abschnitt einer Unterseite (25) des ringförmigen Bodenabschnitts (22) einstückig angeformt ist, wobei die Unterseite (25) des ringförmigen Bodenabschnitts (22) an einer radialen Außenseite des zylinderförmigen unteren Abschnitts (26) als Federauflagefläche (36) dient, wobei der ringförmige Bodenabschnitt (22), der zylinderförmige obere Abschnitt (24) und der zylinderförmige untere Abschnitt (26) eine Vielzahl von gewichtsreduzierenden Hohlräumen (37) aufweisen.
  2. Federbein-Gleitlager nach Anspruch 1, ferner umfassend:
    ein rohrförmiges Radialgleitlagerteil (7), wobei das Gehäuseoberteil (3) einen ringförmigen oberen Abschnitt (12), an dem die ringförmige Unterseite (2) ausgebildet ist, und einen zylinderförmigen Abschnitt (14) umfasst, der ausgehend von einem radial innen liegenden umlaufenden Rand oder radial außen liegenden umlaufenden Rand des ringförmigen oberen Abschnitts (12) einstückig angeformt nach unten hin verlängert ist und der eine zylinderförmige Seitenfläche (13) aufweist, wobei das Gehäuseunterteil (5) eine zylinderförmige Seitenfläche (29) aufweist, die der zylinderförmigen Seitenfläche (13) des zylinderförmigen Abschnitts (14) gegenüberliegt, und das Radialgleitlagerteil (7) zwischen der zylinderförmigen Seitenfläche (13) des zylinderförmigen Abschnitts (14) des Gehäuseoberteils (3) und der zylinderförmigen Seitenfläche (29) des Gehäuseunterteils (5) angeordnet ist.
  3. Federbein-Gleitlager nach Anspruch 1 oder 2, wobei das Gehäuseunterteil (5) einen inneren umfangsseitig angeordneten zylinderförmigen, vorstehenden Abschnitt (27), der einstückig angeformt ausgehend von der ringförmigen Oberseite (4) nach oben hin zu einer radialen innen liegenden Umfangsseite ragt, und einen äußeren umfangsseitig angeordneten zylinderförmigen, vorstehenden Abschnitt (28) umfasst, der einstückig angeformt ausgehend von der ringförmigen Oberseite (4) nach oben hin zu einer radialen außen liegenden Umfangsseite ragt, wobei das Axialgleitlagerteil (6) zwischen dem inneren umfangsseitig angeordneten zylinderförmigen, vorstehenden Abschnitt (27) und dem äußeren umfangsseitig angeordneten zylinderförmigen, vorstehenden Abschnitt (28) angeordnet ist.
  4. Federbein-Gleitlager nach einem der Ansprüche 1 bis 3, wobei das Gehäuseoberteil (3) einen innenumfangsseitig angeordneten zylinderförmigen Radaufhängungsabschnitt (15), der einstückig angeformt ausgehend von der ringförmigen Unterseite (2) nach unten in Richtung hin zu einer radialen inneren Umfangsseite eingehängt ist, und einen äußeren umfangsseitig angeordneten zylinderförmigen Radaufhängungsabschnitt umfasst, der einstückig angeformt ausgehend von der ringförmigen Unterseite (2) nach unten in Richtung hin zu einer radialen äußeren Umfangsseite eingehängt ist, wobei das Axialgleitlagerteil (6) zwischen dem inneren umfangsseitig angeordenten zylinderförmigen Radaufhängungsabschnitt (15) und dem äußeren umfangsseitig angeordneten zylinderförmigen Radaufhängungsabschnitt angeordnet ist.
  5. Federbein-Gleitlager nach Anspruch 1, wobei das Gehäuseoberteil (3) einen ringförmigen oberen Abschnitt (12), auf dem die ringförmige Unterseite (2) ausgebildet ist, und einen zylinderförmigen Abschnitt (14) umfasst, der einstückig angeformt ausgehend von einem radialen äußeren Umfangsrand des ringförmigen oberen Abschnitts (12) nach unten hin verlängert ist, und der zylinderförmige obere Abschnitt (24) durch den zylinderförmigen Abschnitt (14) des Gehäuseoberteils (3) umschlossen ist.
  6. Federbein-Gleitlager nach Anspruch 5, ferner umfassend:
    ein rohrförmiges Radialgleitlagerteil (7),
    wobei der zylinderförmige obere Abschnitt (24) des Gehäuseunterteils (5) eine zylinderförmige Seitenfläche (29) aufweist, die einer zylinderförmigen Seitenfläche (13) des zylinderförmigen Abschnitts (14) des Gehäuseoberteils (3) gegenüberliegt,
    wobei das Radialgleitlagerteil (7) zwischen der zylinderförmigen Seitenfläche (13) des zylinderförmigen Abschnitts (14) des Gehäuseoberteils (3) und der zylinderförmigen Seitenfläche (29) des zylinderförmigen oberen Abschnitts (24) des Gehäuseunterteils (5) angeordnet ist.
  7. Federbein-Gleitlager nach Anspruch 2 oder 6, wobei das Radialgleitlagerteil (7) aus Kunstharz gefertigt ist, das zumindest ein Kunstharz ausgewählt aus der Gruppe umfassend Polyacetalharz, Polyamidharz, thermoplastisches Polyesterharz, Polyolefinharz und Fluorharz aufweist.
  8. Federbein-Gleitlager nach einem der Ansprüche 1 bis 7, wobei das Gehäuseoberteil (3) so ausgeführt ist, dass es an dem Gehäuseunterteil (5) federelastisch gelagert und befestigt werden kann.
  9. Federbein-Gleitlager nach einem der Ansprüche 1 bis 8, wobei das Gehäuseoberteil (3) aus Kunstharz gefertigt ist, das zumindest ein Kunstharz ausgewählt aus der Gruppe umfassend Polyacetalharz, Polyamidharz, thermoplastisches Polyesterharz, Polyolefinharz, Polycarbonatharz und Fluorharz aufweist.
  10. Federbein-Gleitlager nach einem der Ansprüche 1 bis 9, wobei das Axialgleitlagerteil (6) aus Kunstharz gefertigt ist, das zumindest ein Kunstharz ausgewählt aus der Gruppe umfassend Polyacetalharz, Polyamidharz, thermoplastisches Polyesterharz, Polyolefinharz, Polycarbonatharz und Fluorharz aufweist.
  11. Federbein-Gleitlager nach einem der Ansprüche 1 bis 10, wobei das Gehäuseunterteil (5) aus faserverstärktem Kunstharz ausgebildet ist, das zumindest ein Kunstharz ausgewählt aus der Gruppe umfassend Polyacetalharz, Polyamidharz und Polypropylenharz sowie in dem Kunstharz enthaltene Verstärkungsfasern aufweist.
  12. Federbein-Gleitlager nach einem der Ansprüche 1 bis 11 zur Verwendung in einer Radaufhängung vom Federbeinlagertyp in einem Vierradkraftfahrzeug.
  13. Radaufhängungsstruktur vom Federbeinlagertyp zur Verwendung in einem Vierradkraftfahrzeug, umfassend:
    ein Federbein-Gleitlager (1) nach einem der Ansprüche 1 bis 11 und eine Radaufhängungsschraubenfeder (61), deren eines Ende an einer Federauflagefläche (36) des Gehäuseunterteils (5) anliegt.
EP04714883A 2003-03-25 2004-02-26 Federbeingleitlager Expired - Fee Related EP1607645B1 (de)

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JP2003083747A JP4378983B2 (ja) 2003-03-25 2003-03-25 ストラット滑り軸受
PCT/JP2004/002272 WO2004085864A1 (ja) 2003-03-25 2004-02-26 ストラット滑り軸受

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KR20050115302A (ko) 2005-12-07
RU2005129602A (ru) 2006-06-27
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KR101185600B1 (ko) 2012-09-24
EP1607645A4 (de) 2007-10-10
WO2004085864A1 (ja) 2004-10-07
EP1607645A1 (de) 2005-12-21
JP2004293589A (ja) 2004-10-21
RU2361127C2 (ru) 2009-07-10
US20060215945A1 (en) 2006-09-28
DE602004025558D1 (de) 2010-04-01
US8066435B2 (en) 2011-11-29
CN1764793B (zh) 2010-10-06

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